Bicycle Archive · Specification report

2001 Marin MBX-125

Velopedia Archive ID 35962

Overview

Model year	2001
Brand	Marin
Model	MBX-125
Bicycle type	BMX
Archive ID	35962
Original MSRP	$275.99
Colors	Tuning Fork Blue/Metallic
Sizes	Junior

Frameset

Frame construction	TIG-welded
Frame material	4130 chromoly
Fork	Marin
Fork material	4130 chromoly, unicrown crown
Rear shock	N/A

Drivetrain

Component group	N/A
Shifters	N/A
Front derailleur	N/A
Rear derailleur	N/A
Crankset	1-piece chromoly 175mm, 44 teeth
Bottom bracket	Loose ball
Rear cogs	1-speed, 16 teeth
Chain	KMC, 1/2 x 3/32"
Pedals	Platform

Brakes

Brakes	ProMax linear-pull rear brakes, Unspecified front/ProMax linear-pull rear levers

Cockpit & contact points

Headset	1 1/8" threadless Tange Aheadset
Handlebar	Chromoly BMX
Handlebar extensions	Not included
Stem	Aluminum, forged
Saddle	BMX
Seatpost	Aluminum micro-adjust

Wheels & tires

Hubs	Aluminum
Rims	Alex aluminum, 36-hole
Spokes	Stainless steel, 2.0mm
Front tire	20 x 2.125" knobby
Wheel size	20" wheels

Geometry · Legacy reference

Top tube	457.2 mm
Head-tube angle	72.5°
Seat-tube angle	68.5°
Chainstay / rear center	393.7 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 27, 2026.